tst_QSharedMemory: remove mention of gravlaks.troll.no

It was our old, HP-UX machine on Itanium (ran on big-endian mode). We
don't support HP-UX any more; HP will still support the 11i v3 release
until 2025, but I doubt anyone wants to run any new software there. One
hopes that HP has long since fixed the issue, but I doubt it since the
last release is from 2007. Gravlaks probably ran HP-UX 11i v3.

There are a couple other left-overs of ".troll.no" in the repository,
the majority of which are URL manipulation in tst_qurl.cpp and in
tst_qnetworkcookie.cpp, then the certificates for fluke.troll.no (valid
until 2035) and aspiriniks.troll.no (expired in 2009, but we don't need
it for validity).

Change-Id: I810d70e579eb4e2c8e45fffd1719122747d7b85a
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>

tests/auto/corelib/kernel/qsharedmemory/tst_qsharedmemory.cpp

@@ -684,10 +684,6 @@ void tst_QSharedMemory::simpleThreadedProducerConsumer()
     QFETCH(int, threads);
     rememberKey(QLatin1String("market"));
 
-#if defined Q_OS_HPUX && defined __ia64
-    QSKIP("This test locks up on gravlaks.troll.no");
-#endif
-
     Producer p;
     QVERIFY(p.producer.isAttached());
     if (producerIsThread)